27381133 has 16 divisors (see below), whose sum is σ = 31046400. Its totient is φ = 23970240.

The previous prime is 27381113. The next prime is 27381149. The reversal of 27381133 is 33118372.

It is not a de Polignac number, because 27381133 - 2¹⁷ = 27250061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27381113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21628 + ... + 22858.

It is an arithmetic number, because the mean of its divisors is an integer number (1940400).

Almost surely, 2^27381133 is an apocalyptic number.

It is an amenable number.

27381133 is a deficient number, since it is larger than the sum of its proper divisors (3665267).

27381133 is a wasteful number, since it uses less digits than its factorization.

27381133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332.

The product of its digits is 3024, while the sum is 28.

The square root of 27381133 is about 5232.6984434420. The cubic root of 27381133 is about 301.4050132240.

It can be divided in two parts, 273 and 81133, that added together give a triangular number (81406 = T₄₀₃).

The spelling of 27381133 in words is "twenty-seven million, three hundred eighty-one thousand, one hundred thirty-three".